The teaser wasn't about games, it was about the hardware only.
IntSys had no hand in making TMS#FE (for the purposes of this topic). That was all ATLUS. Color Splash, Pushmo World and Game & Wario are their HD efforts.
Yeah the teaser disquieted me, especially with the surrounding language that Switch is a home console, because it showed Nintendo games and what I take Nintendo to think big western games to be, one of which is going on 5 years old, and then the talk after the teaser was that these games might not even come to the system. It was incredibly weird and I hope it was not signalling what sort of system the Switch is setting itself up to be. Couple that with plausible denials from the likes of Level 5, limited outward signs of support from other Japanese companies outside of Enix-side SE, and it is worrisome. I also get that Nintendo was not speaking to me, that Nintendo was not trying to prove the space for Switch exists in the market or to tell me the games I like will continue to exist, but rather trying to tell non-informed consumers that they can now play pretty Nintendo games and tent pole western games at home or on the go and moreover play them together.
The thing is: I'm not at a place with Nintendo or with the market that I can just believe that behind this rhetoric, there is also, obviously, what I want. Switch is currently rumored to have poor battery life (could just be dev kit), has a large, less portable form factor, is HD (so less of a draw to third parties as the cheaper option; longer development times), and will be releasing as an install base 0 console at a time much deeper into the reign of mobile than 3DS did, etc. It needs a convincing catalog to combat that; I think Nintendo realizes that (the new marketing stuff with the face buttons), but I really want evidence that Nintendo not just knows about it but is doing something about it. Classic Nintendo first party leads the way, third parties will follow in our wake, advertising coupled with strange western game advertising does not inspire much confidence in this regard.
As to HD: My main question is how much does HD knowledge gained in PM bleed into the next FE project? Are the teams the same? Do they share technical staff, techniques, engines? Etc. Same thing with third party developers. On top of this, for third parties, there is the question as to how this changes the value proposition of developing for Nintendo. If third parties adopt a wait and see approach, the concern is that they will put in too little, too late (especially with HD extending the pipeline) and their caution will create the conditions, which make it seem wise in retrospect. Again, I really want Nintendo to be mustering support actively for the device. There already was a huge drop off in support between DS and 3DS. There might well be another drop off. Nintendo needs to limit that as much as they can, while also using the hybrid functionality and the specs to bring in as much PS4/XBOne support as they can (with cross-gen Japanese games being the lowest hanging fruit).
Moreover, Nintendo has a proven audience for the games on 3DS and I think their console relatives could do fine on Switch too. Pushing western games that have a dubious audience on a Nintendo is just strange. Those are riskier gambles as to continued support. Nintendo, imo, needs to get the thing as a successful portable in Japan to have a healthy continuous development community around it and then hope to cultivate connections to western developers off of the install base numbers that gets them.
Or maybe, Skyrim on the go sells it all and I'm a complete fool but these are where my worries lie and why the teaser and information and positioning around it make me fear for the device.
And again, I realize it was not the teaser's point to answer my concerns, but it multiplied them.